Value of Edison CD Sampler?

I stumbled across this forum when looking for information/value on this Edison CD. My grandfather was a collector of all things relating to Thomas Edison. He passed a number of years ago and I kept several machines and other pieces of Edison ephemera. One of the items I kept is this Edison CD sampler. I've decided to sell it as I am not a collector of music.

Can anyone provide me with a rough value? The only copy I can find for sale is on eBay and the seller is asking $4,000. Seems ridiculous to me. I do recall seeing one actually sell on eBay several years ago for over $1,000 but can't remember the exact amount.